This circuit was obtained from an American publication from the 80's. We can use a BD136 instead of the original and the delay of the order of 10 seconds is obtained by C1. The value of this component can be changed.
This circuit was obtained from an American publication from the 80's. We can use a BD136 instead of the original and the delay of the order of 10 seconds is obtained by C1. The value of this component can be changed.